package c.footEven;

public class TestMain {

	public static void main(String[] args) {
	  int size=10;
	  int c=fun(size);
      System.out.println(c);
	}
    public static int fun(int size){
      if(size==1)return 1;
      if(size==2)return 2;	
      return fun(size-1)+fun(size-2);	
    }
}
